Form N-400, Part 4: Can I use a mail forwarding service address as a residence address?

I have a question regarding Part 4 of form N-400: Information About Your Residence (Where have you lived during the last 5 years?).

When my wife & I first arrived in the the US, we spent the first two months traveling around the country on a road trip living from hotel to hotel. So I think it should be obvious that we don't list the many hotels we resided in from night to night.

So I thought the best option would be to list our US mail forwarding address as our residence during this period. The reasoning behind this thought is because it's the address where we had our Permanent Resident Cards and Social Security Cards mailed to.

We activated our Green Cards during a trip to Hawaii from our home country earlier that year (using the mail forwarding address as our mailing address for the GC's & SSC's) then returned to our home country to save money before moving permanently to the US. The USCIS has our mail forwarding address on file and so does our credit report records.

Do you think this would be the correct thing to do? Or should I just leave a two month gap?

I just looked at my 2010 tax return and there was no mention on the mailing address, just our PO Box address at the time of filing. Do you think the IRS would have that mailing address on file? We were not employed in the USA and had no income during the time we had the mail forwarding address.

Oops, actually I just noticed we had form W2-G with a win we had a a casino whilst on the road which has our mail forwarding address listed as our address.